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PCA-based approach for inhomogeneous PSF estimation and partial volume correction in PET

Irace, Zacharie and Reilhac, Anthonin and Mendes de Vigo, Bruno and Batatia, Hadj and Costes, Nicolas PCA-based approach for inhomogeneous PSF estimation and partial volume correction in PET. (2016) In: IEEE Nuclear Science Symposium, Medical Imaging Conference and Room-Temperature Semiconductor Detector Workshop (NSS/MIC/RTSD 2016), 29 October 2016 - 6 November 2016 (Strasbourg, France).

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Official URL: https://doi.org/10.1109/NSSMIC.2016.8069439


The quality of the measurements obtained in Positron Emission Tomography (PET) is severely limited by partial volume effects (PVE). This study proposes a Partial Volume Correction (PVC) technique that considers the spatial variability of the system's Point Spread Function (PSF) across the Field Of View (FOV). The proposed PSF model uses Principal Component Analysis to express their variability according to a small number of components called eigen-PSF, forming an orthonormal basis. The interpolation of the coordinates of these PSFs in this created basis allows their precise estimation across the FOV of the system. The resulting image degradation model can be expressed as a weighted sum of convolutions that can be integrated efficiently into classical PVC algorithms. Initial results shows accurate PSF estimation as well as significant image restoration.

Item Type:Conference or Workshop Item (Paper)
Additional Information:Thanks to IEEE editor. The definitive version is available at http://ieeexplore.ieee.org This papers appears in Proceedings of NSS/MIC/RTSD 2016. Electronic ISBN: 978-1-5090-1642-6 The original PDF of the article can be found at: https://ieeexplore.ieee.org/document/8069439 Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
HAL Id:hal-02319738
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Université de Toulouse > Université Toulouse - Jean Jaurès - UT2J (FRANCE)
Université de Toulouse > Université Toulouse 1 Capitole - UT1 (FRANCE)
Other partners > CERMEP - Imagerie du vivant (FRANCE)
Other partners > Fondation Neurodis (FRANCE)
Laboratory name:
Deposited On:30 Sep 2019 08:58

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